System.Windows.Controls.MultiSelectTreeViewItem.OnMouseDoubleClick C# (CSharp) Méthode

        protected override void OnMouseDoubleClick(MouseButtonEventArgs e)
        {
            base.OnMouseDoubleClick(e);

            FrameworkElement itemContent = (FrameworkElement) this.Template.FindName("headerBorder", this);
            if (!itemContent.IsMouseOver)
            {
                // A (probably disabled) child item was really clicked, do nothing here
                return;
            }

            if (IsKeyboardFocused && e.ChangedButton == MouseButton.Left) IsExpanded = !IsExpanded;
        }